Seiko Cal. 6635 - 831

The Seiko 6635-831 represents an important milestone in Seiko's 1995 lineup. It features a White dial protected by a Acrylic crystal and offers 100m of water resistance. [seikata-wm-1c588c948380]

Also known as: Tuna, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

11.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

100m

Dial Color

White

Jewels

23j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1995

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